باخيل محمد صالح عبد الله. Indications: its concept, types, the differences between them and the other concepts similar to them. Ibn Khaldoun Journal for Studies and Researches, فلسطين, v. 3, n. 5, 2023. DOI: 10.56989/benkj.v3i5.349. Disponível em: https://www.benkjournal.com/benkj/article/view/349. Acesso em: 25 jun. 2026.